From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4AF1C3703D6; Mon, 5 May 2025 22:58:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746485901; cv=none; b=lhpbyCw3EAUZ6C3ZlOtRqTl6pwnfy/RSVicPKiKffixQPJdy6Cqleo/DYOIhuCRNERLFOrrNX0yVKtWjLxs62cBydEpke0uFsVKZ+E3KhsONo2jXG+9PfcPOzg4SIkFntt09gH6+5LEXkM6GcL7VrdDPeVr5ntlRXwdg1VlOaoU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746485901; c=relaxed/simple; bh=rK8UgpSEnGG6WpUj0pfBe+FyfH9qHFqoFjKvOIgzK70=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=gg4E6/qefx+SK/wOy2BBm4XmYXnns0wKfNG8oq8eaYvIEWsnB+jnKV94xfkKWxcMW5eaizH1a/VGJzO1pz45ATdVdqEytVpo7UhvMetmIuBGja2v6xbxNEf4mQTYVdrcygq+4H8Th6Kli8Jq/j3DRRG+btH44Rj6bzsfM1auaGc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B2rvLQQz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="B2rvLQQz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8CA8BC4CEE4; Mon, 5 May 2025 22:58:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746485901; bh=rK8UgpSEnGG6WpUj0pfBe+FyfH9qHFqoFjKvOIgzK70=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B2rvLQQzRDJ3JsLrKEzd/ot0nZ2Gf34/MzzJ6uWzRWjD+ncZ1w6ZkC/dUwKlb/kfC oyEycdzXDsm8XfTKGTPM+Cf0cSjWGFT1hT8eq5Mr6meSUjmOWpO5MR/iHsqCGkKfpO SoGnRvCYjJRVZ5GB6n+WiryMbQVzyVa4aWWd5dXueTj18Ruq3UTZPHI+UGzG9H9jDZ wFDMSPxCKjakJTuTCHN0Htes/Hg6eormlulUbV7MtMZ6rnCsp2IyHuyreAnbuTM9s9 T+S3mjgOL2uGdfLMbcddSk+iETMpKKKH98aq46xwrTib9Ko5dlS81Cy5ELY6yo1zB7 xppwSbHuPiSYw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tiwei Bie , Johannes Berg , Sasha Levin , richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, rppt@kernel.org, dave.hansen@linux.intel.com, akpm@linux-foundation.org, richard.weiyang@gmail.com, kevin.brodsky@arm.com, benjamin.berg@intel.com, linux-um@lists.infradead.org Subject: [PATCH AUTOSEL 6.6 055/294] um: Update min_low_pfn to match changes in uml_reserved Date: Mon, 5 May 2025 18:52:35 -0400 Message-Id: <20250505225634.2688578-55-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505225634.2688578-1-sashal@kernel.org> References: <20250505225634.2688578-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.89 Content-Transfer-Encoding: 8bit From: Tiwei Bie [ Upstream commit e82cf3051e6193f61e03898f8dba035199064d36 ] When uml_reserved is updated, min_low_pfn must also be updated accordingly. Otherwise, min_low_pfn will not accurately reflect the lowest available PFN. Signed-off-by: Tiwei Bie Link: https://patch.msgid.link/20250221041855.1156109-1-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- arch/um/kernel/mem.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 38d5a71a579bc..f6c766b2bdf5e 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -68,6 +68,7 @@ void __init mem_init(void) map_memory(brk_end, __pa(brk_end), uml_reserved - brk_end, 1, 1, 0); memblock_free((void *)brk_end, uml_reserved - brk_end); uml_reserved = brk_end; + min_low_pfn = PFN_UP(__pa(uml_reserved)); /* this will put all low memory onto the freelists */ memblock_free_all(); -- 2.39.5